How many cubic feet are you cooling with that 14,000 BTU A/C unit? Also what do you keep the temp of that area? I ask because that is *exactly* what I was going to use for my setup after researching I figure cooling as small an area as possible with a 70F miner inlet temp along and proper waste heat removal will do the trick.

I would run a larger duct on the outlet of the miner. My S7 only increases slightly in temp with a 4" adapter, but my S9s went up a lot when I tried to use that size duct. I am having a buddy 3D print some 6" exhaust outlets (for me this is all temporary until my proper setup is finished). As for the other duct sizing I believe you can find some HVAC calculators out there to help. Each S9 puts out roughly 225 CFM of air and any kind of restriction raises the chip temp quick.

2 PSUs max, I'd like to mount them, but if it would take a lot of custom work I'll find one large setup or just not mount the 2nd to the frame.

What all would I need if I wanted to utilize all 12 GPUs? I imagine the tray would need to support two rows of fans, with the 2nd row cooling the 4 additional GPUs? Would there be room for two power supplies as well?

I picked up an S7 off of eBay for $630.00 + $37.00 shipping in November. I guess I got super lucky to get in before the prices went in to stupid mode. Hell I was worried about ROI at that price point Anyway it is still cranking along with Awesomeminer reporting back $13.84/day as of this morning.

Here's the problem with what you ask. YOU are the only person who will be held to a professional standard as will the company you represent. Not your customers and certainly not people on the Internet. I spent many years in sales, if you have any time at all in it you should know this.

Or use 30A breakers and save slots.

But you have a larger problem, you're limited to 80% of that 100A sub-panel. So 80A which = roughly 11ish miners if you figure roughly 7A per miner maybe a tad more if you calculate off 6.4A, but why risk it?

You can look up difficulty and pool fees yourself. This is a screenshot from Awesomeminer for a couple of S9s, an S7,  and a couple GPU miners ('cause I forgot to crop them out ), so far its calculations have been pretty good.




Hmmmm, I guess my noob status won't let it display pics?

I don't know you and I am not looking to pick a fight. However I find it ironic that in one breath you say it cannot be called a scam without proof and in another you're basically saying "hey believe in this new miner" with no proof. I've read your other posts and if you are truly working with the company can't you get some new pics or something? Because believe me, the company is being tried in the court of credibility right here and now!

Did you have a look at those Tripp-Lite PDUs? Those have everything except surge protection. You might give their support a call and see if they have anything with the features you're looking for and surge suppression. Maybe the same for APC, Liebert/Vertiv etc. Or maybe they can offer an alternative method.

I am afraid that their going to say use a UPS, which is what large operations do for line conditioning.

You need to take in to account the wire gauge from the breaker to the outlet, it's not *just* the breaker or *just* the outlet that dictates the max amperage.

Hey it's your money if you must have a surge protector get one. Also if you want to run two miners on a 15A circuit go for it, but I find it funny you're worried about surge protectors and fires from a surge more than overloading a circuit.

Oh and it sounds like you need a new electrician...

I think one could argue back and forth the real value of consumer grade "surge" protectors.

Anyway I would look at a "smart" PDU for the other items you want. You can get them in several configs from metered, metered and switched, monitored etc, etc. Also a 15A circuit is cutting it awfully close running two miners, it also depends on the brand and model. S9s are like 6-7A each and the M3's are like 10A each. Remember you don't want to exceed 80% of the circuit capacity.

I got lucky and picked up an S7 from eBay before both Bitcoin and the used miner market went nuts. After many many days of looking it was obvious that there's several sellers who must be doing something artificially to inflate their positive reviews and the counts of those. Someone with like 100% and many thousands positive reviews seems awfully fishy to me.

This spammed listing seems to make it's rounds under different sellers, they might be legit, but I do not trust them at all.

 https://www.ebay.com/itm/USED-Bitmain-Antminer-S7-Bitcoin-ASIC-Miner-4-73TH-s-FreePSU-Perfect-Working/391932509858?epid=12010963140&hash=item5b40ff7ea2:g:4KcAAOSwHNxaMbmN

Anyway lately there's been a ton of used miner listings like that one and they all seem to be using the same letter code description (A, B, C, etc). If you're going to buy from someone thoroughly check out their reviews and most importantly the item description. It's pretty easy to tell someone who's copy and pasting from other listings or spamming out tons of the same listing. Also look closely at the pictures, are they silly looking photoshopped jobs or do they look like a genuine unique listing. Contact the seller and have them send you more if needed, heck maybe even a video of the unit in question running.

Lastly whether or not they say no refund if the seller misrepresented the item eBay will help you.

Have you kept records of your attempted communications with both companies? Have you called?

Just asking because the accusations you are making are pretty serious, however they seem unsubstantiated without more info.

Another satisfied Awesome Miner customer.

I am going to invest some in AEON and ZCL, both $$ and some mining hash-power. Reason? I feel that one of the original intents of cryptocurrency was privacy/anonymity so I like "privacy" coins.

That's true, but it carries an extra cost, whereas OpenVPN does not.

Most PDUs split the incoming 30A in to two 15A or so circuit breakers. So you need to figure no more than two per circuit breaker of the PDU. Although 4 total is probably too close (counting inrush and possible high heat) as they run 6-7A per miner. Currently I have an S7 and an S9 on one PDU breaker and an S9 on the other. No plans to run more, once my M3s get here I wont run more than one of those on each circuit of my 30A PDU.

There's a lot of ways to do this, but if you're going to use a router that supports OpenVPN you configure the router to receive OpenVPN connections and then you put the OpenVPN client on the device you want to manage the miners from, like your phone or office PC.

You have an electrician and now that you have a reputable answer of 7A per device so just figure how many of those devices you're going to run total and let the electrician go from there.

Also keep in mind you'll most likely need some cooling, so set aside a breaker for that.

I went with 30A breakers and L630P outlets to match the PDUs I have and to reduce the total number of circuits and breakers. You don't *have* to run 20A breakers, again though that's where your electrician can advise what he thinks is best.